/**
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Famous Industries Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

'use strict';

/**
 * Deep clone an object.
 *
 * @method  clone
 *
 * @param {Object} b       Object to be cloned.
 * @return {Object} a      Cloned object (deep equality).
 */
var clone = function clone(b) {
    var a;
    if (typeof b === 'object') {
        a = (b instanceof Array) ? [] : {};
        for (var key in b) {
            if (typeof b[key] === 'object' && b[key] !== null) {
                if (b[key] instanceof Array) {
                    a[key] = new Array(b[key].length);
                    for (var i = 0; i < b[key].length; i++) {
                        a[key][i] = clone(b[key][i]);
                    }
                }
                else {
                  a[key] = clone(b[key]);
                }
            }
            else {
                a[key] = b[key];
            }
        }
    }
    else {
        a = b;
    }
    return a;
};

module.exports = clone;
